High severity · published Feb 10, 2026
CVE-2026-21517
Windows App for Mac Installer Elevation of Privilege Vulnerability
7.0
CVSS
0.4%
EPSS
No
On KEV
Description
Improper link resolution before file access ('link following') in Windows App for Mac allows an authorized attacker to elevate privileges locally.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 32% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WA
Windows App for Mac · Microsoft
11.0.0 before 11.3.2 · source: vendor
WA
Windows App · Microsoft
before 11.3.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-21517
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-21517
Vendor Advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21517
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